I am also a huge fan of an overnight DT w coconut oil. I try to do it once or twice a week. I am babying the ends of my hair trying to grow out some particularly bad choices from a year and a half ago and it's been the best thing I've tried so far. It does break me out a tiny bit on my forehead once in a while but it's worth it.

I have experimented with a number of other DTs, so I'll mention them briefly. I also use the SM anti breakage mask occasionally and it smells nice but not sure it does much for my hair. I'm going to use up what I bought but I won't repurchase. Someone mentioned GVP CB. I just tried as a RO for the first time and its really rich. I imagine it would be a good DT alone or mixed with other things. I've also mixed up olive oil, honey, and TN condish and left that on for an hour or so then co washed it out. I wasn't really expecting much from that but it left my hair really soft and shiny. It did temporarily darken my highlights, but I liked that as it just made the color richer. HTH!